Optional vena cava filter with disengaging centering struts: retrieval in an animal model.
An optional inferior vena cava (IVC) filter prototype was evaluated for safety and long-term retrievability as an initial feasibility study in an animal model. This filter has four centering struts that have the ability to disengage from the filtering cone portion, allowing the legs to slide out of endothelial growth. Retrieval of six filters in three animals was successful up to 27 weeks. There was no substantial filter tilt, migration, or IVC damage. In conclusion, this filter design may help overcome some of the shortcomings in currently approved optional IVC filters, including long-term retrieval difficulties, tilting, or migration.
Hoppe
Hanno
H
Dotter Interventional Institute, Oregon Health & Science University, Portland, Oregon, USA.
Beyer
Theodore J
TJ
Park
Won-Kyu
WK
Uchida
Barry T
BT
Pavcnik
Dusan
D
Keller
Frederick S
FS
Kaufman
John A
JA
D000818:Animals; D002404:Catheterization / Q000295:instrumentation*; D020878:Device Removal; D005240:Feasibility Studies; D005260:Female; D008422:Materials Testing; D023421:Models, Animal; D010690:Phlebography; D011474:Prosthesis Design; D012756:Sheep; D013997:Time Factors; D016306:Vena Cava Filters; D014682:Vena Cava, Inferior / Q000000981:diagnostic imaging / Q000473:pathology